Cleaning sheet



FIG. 1 is a front view of a cleaning sheet showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof; a left side view is symmetrical to the right side view;

FIG. 4 is a top plan view thereof; a bottom plan view is symmetrical to the top plan view;

FIG. 5 is a partially enlarged front view showing a portion defined by lines A-A′ and lines B-B′ in FIG. 1;

FIG. 6 is a sectional end view taken along line 6-6 in FIG. 5; and,

FIG. 7 is a sectional end view taken along line 7-7 in FIG. 5.

The broken lines show the environment of the claimed subject matter and form no part of the claimed design, and the dot-dash chain line indicates a boundary of the claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a cleaning sheet, as shown and described. 